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Featured Peer-reviewed Publications


Methods and Issues Specific Studying Latino Health Equity in Primary Care


The PRIMER Lab has pioneered work considering and using electronic health records to study ethnicity, nativity, immigration, and other policy issues in primary care, developing methods to impute oft-excluded information. These explorations have also included discussions of the ethics and safety of studying sensitive but important sub-group information in Latinos.

Heintzman, J, Marino, Clark, K. Cowburn S, Sosa S, Cancel L, Ezekiel-Herrera D, Cohen D. Using Electronic Health Record Data to Study Latino Immigrant Populations in Health Services Research. J Immigrant Minority Health (2019).

Heintzman J, Marino M. Race and Ethnicity Data in Research. JAMA. 2019 Mar 26;321(12):1217-1218. doi: 10.1001/jama.2018.21947.

Aviles-Santa ML, Heintzman J, Lindberg N, Guerrero-Preston R, Ramos K, Abraido-Lanza A, Bull J, Falcon A, McBurnie MA, Moy, E, Papanicolaou G, Pina IL, Popovic J, Suglia S, Vazquez M. Personalized medicine and Hispanic health: improving health outcomes and reducing health disparities. BMC Proceedings. 2017;11(Suppl 11):11.

Heintzman J, Bailey S, Devoe J, Cowburn S, Kapka K, Duong T-V, Marino M. In low-income Latino patients, post-ACA insurance disparities may be reduced even more than broader national estimates: evidence from Oregon. Journal of Racial and Ethnic Health Disparities. 2017;4(3):329-336.

Block R, Puro J, Cottrell E, Lunn M, Dunne MJ, Quinones A, Chung B, Pinnock W, Reid G, Heintzman J. Recommendations for improving national clinical datasets for health equity research. Journal of the American Medical Informatics Association. 2020 Nov 1;27(11):1802-1807. doi: 10.1093/jamia/ocaa144

Primary Care and Health Equity research in general


The PRIMER Lab has led discussions stressing the importance of understanding, studying, and leveraging primary care and its policy environment in order to understand and advance health equity, as well as practical methods and approaches in this setting.

Heintzman J, Marino M.  The Importance of Primary Care Research in Understanding Health Inequities in the United States.  The Journal of the American Board of Family Medicine July 2021,  34 (4) 849-852; DOI:

Heintzman J, Marino M, Hoopes M, Bailey S, Gold R, O'Malley J, Angier H, Nelson C, Cottrell E, DeVoe J. Supporting health insurance expansion: do electronic health records have valid insurance verification and enrollment data? Journal of the American Medical Informatics Association. 2015;22(4):909-913.


Marino M, Lucas J, Latour E, Heintzman JD. Missing data in primary care research: importance, implications and approaches. Fam Pract. 2021 Mar 29;38(2):200-203. doi: 10.1093/fampra/cmaa134. PMID: 33480404; PMCID: PMC8243609.


Marino M, Bailey S, Gold R, Hoopes M, O’Malley J, Huguet N, Heintzman J, Gallia C, McConnell J, Devoe J. Oregon’s randomized insurance experiment: receipt of preventive services in community health centers. American Journal of Preventive Medicine. 2016;50(2):161-170.


Heintzman J, Gold R, Krist A, Crosson J, Likumahuwa S, Devoe J. Practice-Based Research Networks are promising laboratories for conducting dissemination and implementation research. Journal of the American Board of Family Medicine. 2014;27(6):759-762.


Bailey SR, Heintzman J, Marino M, Hoopes MJ, Hatch BA, Gold R, Cowburn SC, Nelson CA, Angier HE, DeVoe JE. Measuring preventive care delivery: comparing rates across three data sources. American Journal of Preventive Medicine. 2016 Nov;51(5):752-761.
Heintzman J, Marino M, Hoopes M, Bailey S, Gold R, Crawford C, Cowburn S, O’Malley J, Nelson J, Devoe J. Using electronic health record data to evaluate preventive service utilization among uninsured safety net patients. Preventive Medicine. 2014;67:306-310.
Heintzman J, Gold R, Bailey S, Devoe J. The Oregon experiment reexamined: the need for primary care in US health reform. British Medical Journal. 2014;349:g5976.

Marino M, Bailey SR, Gold R, Hoopes MJ, O'Malley JP, Huguet N, Heintzman J, Gallia C, McConnell KJ, DeVoe JE. Receipt of Preventive Services After Oregon's Randomized Medicaid Experiment. Am J Prev Med. 2016 Feb;50(2):161-70. doi: 10.1016/j.amepre.2015.07.032. Epub 2015 Oct 23. PMID: 26497264; PMCID: PMC4718854.

Latinos and Asthma/COPD Equity in Primary Care

The PRIMER Lab has published a considerable amount of work demonstrating that Spanish preferring Latinos often access equitable asthma care at community health centers. This doesn’t extend to all measures however, and some evidence exists from their work that asthma may be less well controlled in this group.

Heintzman J, Kaufman J, Ezekiel-Herrera D. Bailey SR, Cornell A, Ukhanova M, Marino M. Asthma/COPD Disparities in Diagnosis and Basic Care Utilization Among Low-Income Primary Care Patients. J Immigrant Minority Health (2019) 21: 659.

John Heintzman, David Ezekiel-Herrera, Steffani R. Bailey, Arvin Garg,Jennifer Lucas, Shakira Suglia, Stuart Cowburn, Jon Puro & Miguel Marino (2020): Latino-white disparities in ICD-coded asthma diagnosis among US children, Journal of Asthma, DOI:10.1080/02770903.2020.1861628

Heintzman J, Kaufman J, Lucas J, Suglia S, Garg A, Puro J, Giebultowicz S, Ezekiel-Herrera D, Bazemore A, Marino M. Asthma Care Quality, Language, and Ethnicity in a Multi-State Network of Low-Income Children. Journal of the American Board of Family Medicine. September 2020,  33 (5) 707-715; DOI:

Lucas J, Marino M, Fankhauser K, Bailey SR, Ezekiel-Herrera D, Kaufmann J, Cowburn S, Suglia S, Bazemore A, Puro J, Heintzman J. Oral corticosteroid use, obesity, and ethnicity in children with asthma. Journal of Asthma. (2019) DOI: 10.1080/02770903.2019.1656228

Lucas JA, Marino M, Fankhauser K, Bazemore A, Giebultowicz S, Cowburn S, Kaufmann J, Ezekiel-Herrera D, Heintzman J. Role of social deprivation on asthma care quality among a cohort of children in US community health centres. BMJ Open 2021;11:e045131. doi:10.1136/bmjopen-2020-045131 
Lucas JA, Marino M, Giebultowicz S, Fankhauser K, Suglia SF, Bailey SR, Bazemore A, Heintzman J. Mobility and social deprivation on primary care utilization among pediatric patients with asthma. Family Medicine and Community Health. 2021;9:e001085. doi:10.1136/fmch-2021-001085  

Heintzman J, Kaufmann J, Bailey S, Lucas J, Suglia SF, Puro J, Giebultowicz S, Ezekiel-Herrera D, Marino M. Asthma Ambulatory Care Quality in Foreign-Born Latino Children in the United States. Acad Pediatr. 2022 May-Jun;22(4):647-656. doi: 10.1016/j.acap.2021.10.003. Epub 2021 Oct 22. PMID: 34688905.

Jorge Kaufmann, Miguel Marino, Jennifer Lucas, SteffaniR. Bailey, Sophia Giebultowicz, Jon Puro, DavidEzekiel-Herrera, Shakira F. Suglia, John Heintzman. Racial and Ethnic Disparities in Acute Care Use for Pediatric Asthma. The Annals of Family Medicine Mar 2022, 20 (2) 116-122; DOI: 10.1370/afm.2771

Latinos and Cancer Equity in Primary Care


The PRIMER Lab has published work showing significant engagement with by Latinos with primary cancer screening in community health centers. However, when care requires referral, inequities can appear at times between Latinos and non-Hispanic whites

Heintzman J, Hatch B, Coronado G, Ezekiel D, Cowburn S, Escamilla-Sanchez O,Marino M. Role of Race/Ethnicity, Language, and Insurance in Use of Cervical Cancer Prevention Services Among Low-Income Hispanic Women, 2009–2013. Prev Chronic Dis 2018;15:170267.DOI:

Heintzman J, Ezekiel-Herrera D, Quiñones A, Lucas JA, Carrol J, Giebultowicz S, Cottrell E, Marino M. Disparities in Colorectal Cancer Screening in Latinos and Non-Hispanic Whites. American Journal of Preventive Medicine. 2021 Oct 11;S0749-3797(21)00434-7. doi:10.1016/j.amepre.2021.07.009 

Latinos and Cardiovascular (and its risk factors) in Primary Care


In this large domain, the PRIMER Lab has shown that Latino patients similarly may utilize screening services for cardiovascular disease more than other groups, but may not always have risk factors as well-controlled.

Heintzman, J. Bailey SR, Muench J, Killerby M, Cowburn S, Marino M. A lack of lipid screening disparities in obese Latino adults at health centers. American Journal of Preventive Medicine. 2017;52(6):805-809.

Bailey SR Heintzman J, Jacob RL, Puro J, Marino M. Disparities in Smoking Cessation Assistance in US Primary Care Clinics. Am J Public Health. 2018; 108:1082–1090.

Bailey SR, Marino M, Ezekiel-Herrera D, Schmidt T, Angier H, J Hoopes M, JE DeVoe J, Heintzman J, Nathalie Huguet N. Tobacco Cessation in Affordable Care Act Medicaid Expansion States Versus Non-expansion States, Nicotine & Tobacco Research.

Bailey SR, Fankhauser K, Marino M, Schmidt T, Giebultowicz S, Ezekiel-Herrera D, Heintzman J. Smoking Assessment and Current Smoking Status Among Adolescents in Primary Care Settings. Nicotine and Tobacco Research. 2020.

Aceves B, Ezekiel-Herrera D, Marino M, Datta R, Lucas J, Giebultowicz S, Heintzman J. Disparities in HbA1c testing between aging US Latino and non-Latino white primary care patients. Prev Med Rep. 2022 Mar 1;26:101739. doi: 10.1016/j.pmedr.2022.101739. PMID: 35295668; PMCID: PMC8918837.

Datta R, Lucas J, Marino M, Aceves B, Ezekiel-Herrera D, Vasquez Guzman E, Giebultowicz S, Chung-Bridges K, Kaufmann J, Bazemore A, Heintzman J. Diabetes Screening and Monitoring among Older Mexican-origin populations in the US. In Press at Diabetes Care 

Latinos and Infectious Disease/Immunization Equity in Primary Care


The PRIMER Lab has written about a clear increased utilization of immunizations by Latinos (especially Spanish-preferring Latinos) in community health centers. This body of work strongly highlights the potential health resources of Latinos, which needs to be better understood by healthcare organizations.

Heintzman J, O’Malley J, Marino M, Todd J, Stange K, Huguet N, Gold R. SARS-CoV-2 testing and changes in primary care services in a multistate network of community health centers during the COVID-19 pandemic. JAMA. 2020;324(14):1459-1462. doi:10.1001/jama.2020.15891


Heintzman J, Bailey S, Cowburn S, Dexter E, Carroll J, Marino M. Pneumococcal vaccination in low-income Latinos: an unexpected finding in Oregon community health centers. Journal of Health Care for the Poor and Underserved. 2016;27(4):1733-1744.

Heintzman J, Hwang J, Quiñones AR, Guzman CEV, Bailey SR, Lucas J, Giebultowicz S, Chan B, Marino M. Influenza and pneumococcal vaccination delivery in older Hispanic populations in the United States. J Am Geriatr Soc. 2022 Mar;70(3):854-861. doi: 10.1111/jgs.17589. Epub 2021 Dec 2. PMID: 34854478.

Heintzman J, Kaufmann J, Bailey S, Lucas J, Suglia SF, Puro J, Giebultowicz S, Ezekiel-Herrera D, Marino M. Asthma Ambulatory Care Quality in Foreign-Born Latino Children in the United States. Acad Pediatr. 2022 May-Jun;22(4):647-656. doi: 10.1016/j.acap.2021.10.003. Epub 2021 Oct 22. PMID: 34688905.

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